mirror of https://github.com/bitcoin/bitcoin
73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
// Copyright (c) 2018-2019 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#if defined(HAVE_CONFIG_H)
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#include <config/bitcoin-config.h>
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#endif
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#include <cstdio> // for fileno(), stdin
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#ifdef WIN32
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#include <windows.h> // for SetStdinEcho()
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#include <io.h> // for isatty()
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#else
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#include <termios.h> // for SetStdinEcho()
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#include <unistd.h> // for SetStdinEcho(), isatty()
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#include <poll.h> // for StdinReady()
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#endif
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#include <compat/stdin.h>
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// https://stackoverflow.com/questions/1413445/reading-a-password-from-stdcin
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void SetStdinEcho(bool enable)
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{
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#ifdef WIN32
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HANDLE hStdin = GetStdHandle(STD_INPUT_HANDLE);
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DWORD mode;
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GetConsoleMode(hStdin, &mode);
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if (!enable) {
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mode &= ~ENABLE_ECHO_INPUT;
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} else {
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mode |= ENABLE_ECHO_INPUT;
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}
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SetConsoleMode(hStdin, mode);
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#else
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struct termios tty;
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tcgetattr(STDIN_FILENO, &tty);
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if (!enable) {
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tty.c_lflag &= ~ECHO;
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} else {
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tty.c_lflag |= ECHO;
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}
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(void)tcsetattr(STDIN_FILENO, TCSANOW, &tty);
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#endif
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}
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bool StdinTerminal()
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{
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#ifdef WIN32
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return _isatty(_fileno(stdin));
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#else
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return isatty(fileno(stdin));
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#endif
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}
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bool StdinReady()
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{
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if (!StdinTerminal()) {
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return true;
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}
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#ifdef WIN32
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return false;
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#else
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struct pollfd fds;
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fds.fd = 0; /* this is STDIN */
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fds.events = POLLIN;
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return poll(&fds, 1, 0) == 1;
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#endif
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}
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NoechoInst::NoechoInst() { SetStdinEcho(false); }
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NoechoInst::~NoechoInst() { SetStdinEcho(true); }
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